DIA
Dedicated internet access gives one site committed internet capacity, a static address block and a demarcation point, distinct from IP transit.
Definitions only — a term explained here is not a service we sell.
Dedicated internet access is committed internet capacity for one site, sold with symmetric rates, a static address block and a demarcation point. Networks that need full-table reachability buy transit instead.
The committed information rate is the rate the provider commits to; burst covers short peaks. Responsibility passes at the demarcation point, so the last mile needs an owner.
Access, not a private pipe
Broadband is shared and often asymmetric. IP transit gives a network full-table reachability through an upstream, and a private line joins two named sites without reaching the internet. DIA gives one site internet access with committed capacity. For routes into mainland China, see China connectivity options.
Three path types
| Three path types | IP transit | DIA | Private line |
|---|---|---|---|
| What you buy | Reachability via an upstream | Committed internet access | A dedicated circuit |
| Full routing table | Yes | Usually no | No |
| Responsibility ends | At the handoff | At the handoff | At the far end of the circuit |
| Best for | Reachability at scale | Office internet | Fixed paths and guarantees |
Text description
Rows cover what you buy, the full routing table, where responsibility ends and what each path is best for. IP transit carries the full table, DIA usually does not. IP transit and DIA end at the handoff; a private line ends at the far end of the circuit.